,3,2,+,=,5,加号,读作:3加2等于5,摆一摆,4,摆一摆,2 ,4,2,4,1,5,说一说,填一填。,练一练,2,3,5,2,2,4,3,2,5,2,5,5,3,3+2=5,从3起接着数:4、5。,3,2,5,课堂活动,说一说,填一填。,1 + =,+ =,3,4,2,3,5,4.说一说,算一算。,1 2 3,画一画,算一算。,3 + 1 =,2 + 1 =,2 + 3 =,4,3,5,试一试,3,1,4,2,1,3,说一说,填一填。,2,3,5,说一说,填一填。,2,2,4,说一说,填一填。,4,1,5,3,1,4,3,2,5,2,3,5,1,2,3,2,知识巧记,两数合并用加法, 一个一个来点数。 记大数小快又准, 数的组成要记牢。,